Refactor SkyShell to allow multiple SkyViews

sky/shell/ui/engine.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "sky/shell/ui/engine.h"
 
 #include "base/bind.h"
 #include "base/trace_event/trace_event.h"
 #include "mojo/public/cpp/application/connect.h"
 #include "sky/engine/public/platform/WebInputEvent.h"
@@ skipping 15 matching lines @@
 namespace shell {
 
 namespace {
 
 void ConfigureSettings(blink::WebSettings* settings) {
   settings->setDefaultFixedFontSize(13);
   settings->setDefaultFontSize(16);
   settings->setLoadsImagesAutomatically(true);
 }
 
+PlatformImpl* g_platform_impl = nullptr;
+
 }
 
 Engine::Engine(const Config& config)
     : config_(config),
       animator_(new Animator(config, this)),
       web_view_(nullptr),
       device_pixel_ratio_(1.0f),
       viewport_observer_binding_(this),
       weak_factory_(this) {
 }
 
 Engine::~Engine() {
   if (web_view_)
     web_view_->close();
 }
 
 base::WeakPtr<Engine> Engine::GetWeakPtr() {
   return weak_factory_.GetWeakPtr();
 }
 
-void Engine::Init() {
+void Engine::Init(ServiceProviderContext* service_provider_context) {
   TRACE_EVENT0("sky", "Engine::Init");
 
-  service_provider_ = CreateServiceProvider(config_.service_provider_context);
+  mojo::ServiceProviderPtr service_provider =
+      CreateServiceProvider(service_provider_context);
   mojo::NetworkServicePtr network_service;
-  mojo::ConnectToService(service_provider_.get(), &network_service);
-  platform_impl_.reset(new PlatformImpl(network_service.Pass()));
+  mojo::ConnectToService(service_provider.get(), &network_service);
 
-  blink::initialize(platform_impl_.get());
+  DCHECK(!g_platform_impl);
+  g_platform_impl = new PlatformImpl(network_service.Pass());
+  blink::initialize(g_platform_impl);
 }
 
 void Engine::BeginFrame(base::TimeTicks frame_time) {
   TRACE_EVENT0("sky", "Engine::BeginFrame");
 
   if (sky_view_)
     sky_view_->BeginFrame(frame_time);
 
   if (web_view_) {
     double frame_time_sec = (frame_time - base::TimeTicks()).InSecondsF();
@@ skipping 169 matching lines @@
 
 void Engine::DidNavigateLocally(const mojo::String& url) {
 }
 
 void Engine::RequestNavigateHistory(int32_t delta) {
   NOTIMPLEMENTED();
 }
 
 }  // namespace shell
 }  // namespace sky